A common problem on many General Motors cars is the Torque Converter Clutch fails to release and causes the car to stall when it comes to a stop. Most of the time it is a stuck Torque Converter Clutch (TCC) solenoid, ... Lockup reduces slippage in the converter increasing fuel economy. For the converter clutch to apply,
autorepair.about.com/cs/troubleshooting/a/aa061701a.htm
How To Replace Your Torque Converter Clutch Solenoid (GM) from your About.com Guide to Auto Repair ... DIY: How To Replace Your Torque Converter Clutch Solenoid (GM)
autorepair.about.com/cs/doityourself/l/aa011703b.htm
Torque converter - Wikipedia, the free encyclopedia
A torque converter is a modified form of fluid coupling that is used to transfer rotating power from a prime mover, such as an internal combustion engine or electric motor, to a rotating driven load...
en.wikipedia.org/wiki/Torque_converter
The Fiero TCC (Transmission Lockup) Solenoid by Chuck Kichline. I found out that there wasn't a lot of information on automatic transmissions for the Fiero ...
www.michiganfieroclub.com/files/tccsolenoid.pdf www.michiganfieroclub.com/files/tccsolenoid.pdf
What is the lockup solenoid? It's an electrically operated valve in your Fiero automatic transmission that is controlled by the car's computer. When the computer believes it would be effective to lock the torque converter up solid it powers the solenoid which makes the transmission lock up.
www.kichline.com/chuck/fiero/TCC.htm
Document: (PDF File)
When a stall test is performed and engine rpm falls within the specifications, it verifies several items: The one-way clutch in the torque converter stator is holding. Holding devices (clutches, brakes, and one-way clutches) used in first and reverse gears are holding properly.
www.autoshop101.com/forms/AT02.pdf
To test the lockup feature of the torque converter on your car, ... and soon zeroed in on the Torque Converter Clutch (TCC) system. The first transmission shop indicated that they had replaced the TCC Solenoid. So, when it came time to rebuild the transmission again (grinding noises and leaking ATF) I looked at other options...
www.montecarloss.com/TCC_Solenoid.html www.montecarloss.com/TCC_Solenoid.html
When the vehicle is at cruising speed and lockup is desired, an electric solenoid is energized, which opens the Torque Converter Clutch (hereinafter “TCC”) Regulator Valve. This allows fluid pressure to act upon the lockup piston, which is forced against a machined surface on the converter cover.
www.freepatentsonline.com/6840361.html
A torque converter lockup clutch is pressurized from a source of regulated line pressure through a lockup clutch control valve, which directs pressure to either ... 4 is a table showing the states of solenoid-operated shift valves, a converter clutch valve and coast clutch valve for each speed and range of the transmission.
www.freepatentsonline.com/4876923.html
The lockup piston has friction material on its forward surface. When the vehicle is at cruising speed and lockup is desired, an electric solenoid is energized, which opens the Torque Converter Clutch (hereinafter "TCC") Regulator Valve.
www.devileye.net/catalog/balancing_an_engine/torque_con... www.devileye.net/catalog/balancing_an_engine/torque_converter_clutch_solenoid_assembly.html